H.M.S.Bulldog / Beagle

Started by Rowen

23 updates 94 likes 45 comments

H.M.S.Bulldog / Beagle

Purchased a glassfibre hull for this vessel from "Models by Design" and brought it back to Canada from the UK. The hull moulding requires minor rework, but nothing unexpected, I am happy with the product (photo # 1).
Whilst the hull is sold for the Bulldog, I am building her sister-ship, the Beagle.
First part of project (after checking dimensions and hull form) was to make up a framework (photo # 2) which has been glued into hull (photo # 3). The frame is to add stiffness, give some separation of "compartments" and to create a structure onto which the drive and electrical components can fitted.
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2 comments
  1. Dave M
    Vice Admiral
    Their hulls are of good quality. interesting way to make the internal formers and helps confirm the hull shape is correct.
    Do you have an accurate plan for the Beagle?
    Dave
  2. Rowen
    Captain
    The only plan I have is the David Metcalfe one provided with the hull. it is for the Bulldog, but assume the Beagle is very similar.
    If you are aware of a more specific, or another plan, would like to obtain a copy. Can you advise where I can obtain a copy please?
    Thanks
    Liked by Martin555

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H.M.S. BULLDOG / BEAGLE

After much measuring and adjustment finally epoxied the bulkhead structure into hull. Have established that although the port bulwarks are the correct height and shape, the starboard are have been cut slightly too low at the stern ends. Built these up to correct height with plywood and reinforced with glass fibre.
Would be ideal if manufacturers of preformed hulls left them slightly oversize, so the modeler can cut down to size. Much easier that adding slivers of plywood.
Have now also fitted bilge keels and propeller shafts.
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1 comment
  1. petercbrown
    Master Seaman
    Is that an issue with that particular manufacturer? it's the first time I have heard of that.

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HMS BULLDOG / BEAGLE

Continued with hull by adding portholes and anchor boxes. Starting on deck and have decided to take a slightly different approach.
I would like to retain as much access to the hull interior as I can so will make up the deck from two pieces, a "skirt" about 1" wide that will contain the bulwark stanchions and waterways. Onto this will add a detachable deck, which will be planked. The superstructure will also be removable for routine access, but if full access is needed the deck can be removed.
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HMS BULLDOG / BEAGLE

Started work on the foredeck area.
Added the deck wash port slots by making an alloy template and then drilling and filing to the template dimensions.
Also added the the fairleads. Made these out of sections of a plastic syringe body, cut to length and hot swaged over a leather hole hunch to give a tapered appearance. Drilled and filed the holes in the bulwark oval and the epoxied the fairleads into position.
Built the outside of the hull up with epoxy and the filed it to the correct shape and protrusion.
The same technique was used on the bull lead, but with styrene tubing as the hole is bigger. Sleeved the tubing with more styrene and filed to produce the profile.
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HMS BULLDOG / BEAGLE

Whilst there is still access to the "engine" areas decided to finalize the motor mounts. The attached picture shows the process. I concentrate on getting the alignment correct, so this takes quite some
As you can see replaced the flexible HUCO style joint with styrene rod cut to the same length. The brass couplings are inserted into the ends of the rod so the alignment is maintained.
The motors were mounted on a short bulkhead which was initially tacked into the hull. Once the alignment was established the bulkhead was epoxied in place and the dummy sleeves removed.
A small rubber block was inserted lightly into the gap between the motor casing and hull to relieved the weight on the bulkhead.
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4 comments
  1. Rowen
    Captain
    I have tended to twin screw arrangements and have settled on (hull lengths range from 30 - 48") MabuchI 545 motors, that have a speed of around 5500 rpm, direct driven to 45 MM 3 bladed props. These have an operating range of between 2 - 7000 rpm according to supplier.
    At 12 volts the vessels are overpowered, but when sailing on congested waters this is a definite attribute! I am happy with this arrangement as can throttle back to achieve a more realistic scale speed.
    Not sure if this helps with your lifeboat, but my 30" RNLI Tyne class performs well with this set up.
  2. RedRider
    Petty Officer 1st Class
    Thanks Mate,
    Does give me an indication of where I might go with power.

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HMS BULLDOG / BEAGLE

The hull is nearing completion; added the capping strips to the bulwarks, made roller fairleads and generally tidied up the hull. Next comes the making the removable deck onto which the planking will be fitted.
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H.M.S BULLDOG / BEAGLE

Guess spoke to soon! Needed to add portholes whilst easy interior access was still available. Decided to make them out of 5/16" o.d. styrene tube for the outer frame and a 1/4" acrylic rod insert to resemble the glass. Cut them up from the lengths of rod using a pipe cutter.
Epoxied the outer frame into holes drilled into the hull and filled any gaps up with epoxy. Have left the glasses out until the painting is complete. The cut acrylic rod surfaces do require polishing to remove the cutting marks.
After completing this installation, tidied all the loose ends up, now onto the removable decking.
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H.M.S. BULLDOG / BEAGLE

Fitted the under deck in two sections, forward and stern. Whilst this does not take long to describe, it requires very careful measurement and cutting to ensure a good fit.
Made up the rudders. These were made from styrene sheet, heated and bent double around a brass rod. The rudder shaft was inserted in the correct location and then CA glued into place.
Glued the open halves of the sheet together and trimmed to final dimensions. Filled cavity surrounding shaft with epoxy adhesive.
Once set, filed excess off and the rudders were complete with a correct section and shape.
Rudders primed and painted.
The rudder shaft tubes had previously been installed into a wooden block glued in the hull to provide a rigid mounting.
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2 comments
  1. Trillium
    Chief Petty Officer 1st Class
    That's a neat method of making a rudder - haven't seen that one before. What thickness of styrene did you use?
  2. Rowen
    Captain
    Used .045". Whilst this is relatively flexible it does heat and bend easily.
    Once filled with epoxy it gets nice and solid and the rudder shaft is firmly captured.

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Rowen #10 of 24

H.M.S.BULLDOG / BEAGLE

With still unrestricted access to the bottom of the hull, decided it was time to install the main electrical system.
Mounted this above the motors on a styrene base and used terminal posts so the various connections could be fitted and removed easily.
2 x Viper ESCs and a Planet 2.4g Rx were fitted.
Have not confirmed the final SLA battery locations until the ballast checks have been completed.
The original plan was to use 12 volts, but have been recommended to reduce to 6 to give a more realistic water speed.
The picture also shows the top of a water ingress monitor and an adjustable voltage regulator. Fitted this so the voltage to the radar scanner and LEDs could be refined.
Used a relay on the switch circuit so a small control switch could be fitted.
The rudder linkage is fairly standard as can be seen.
Tested and everything works as hoped.
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Rowen #11 of 24

H.M.S. BULLDOG / BEAGLE

Working through the many finishing touches to the hull, but it is essentially complete. Even got the first coats of paint on! The pre-paint preparation was quite quick as the hull moulding was well finished.
Obtained the deck planking; this is laser cut basswood with an uncut portion at the end of each sheet to aid installation. Have now started planking, this uncut portion does hold the strips in alignment and appears to help gluing them down straight.
As this process is likely to take some time, with not very evident progress, may not be writing further updates until this milestone is complete.
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2 comments
  1. Damon
    Petty Officer 2nd Class
    She is going to look really good there, I am really looking forward to see the completed lady in the ogin lol
  2. Rowen
    Captain
    May be a while, but if you live in Ontario hope you can.
    There are some very nice versions in the UK, so should not be too difficult to see one.
    They are a very nice sailing model though, I was given the chance to try one when was last over for a cultural refresher!

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